You’re an excellent host. “Parasites can castrate their hosts, take

over their minds and short out their DNA. They can turn

healthy organisms into the living dead. And they can be

found anywhere — in our legs, our brains, our intestines, our

kitty litter.

Science writer Carl Zimmer’s new book, Parasite Rex:

Inside the Bizarre World of Nature’s Most Dangerous

Creatures, introduces readers to some of nature’s most

sinister characters: nematodes that cause blindness, worms

that swell up a scrotum until it fills a wheelbarrow,

60-foot-long tapeworms and deadly creatures so tiny they

hitchhike on the back of a fly.” Salon